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SILISIL Silicone Oil 20 cSt

SILISIL Silicone Oil 20 cSt

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Versatile silicone oil with improved film formation for hydraulic fluids, transformer insulating fluid, polishes and as a release agent in plastic and rubber mold making.

SILISIL Silicone Oil 20 cSt is a versatile silicone oil with improved film formation for demanding applications. Typical uses include hydraulic fluids for special applications, insulating fluid in transformers, emulsion and paste polishes, release agents in plastics and rubber mold making, and components in medical devices. The oil offers a high flash point, uniform film formation, excellent lubricating properties, low surface energy, chemical inertness, and outstanding dielectric properties; it is compatible with many organic solvents and emulsifiable.

Price on request

  • brand
  • Networking type
  • Paint has hardened
  • Viscosity (cSt)
  • Density (g/cm³)
  • Electrical insulation
  • Food contact
  • Suitable for medical use
  • Certificates
  • Flash point (°C)
  • Pour point (°C)
  • Container

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SILISIL Silicone Oil, Low Viscosity Silicone Fluid, PDMS, Swiss Bearing, Polydimethylsiloxane 1K, Non-Reactive , Dielectric Release Agent, Lubricant , Hydraulic Fluid, Swiss Brand, 20 cSt

 
General Terms and Conditions.

Shipping usually within 1 to 3 business days
(availability will be confirmed after ordering)

. Express logistics. Fast and reliable within Switzerland & Europe.

Shipping from Swiss warehouse within 24 hours. Batch certificate. Invoice within 30 days (B2B). Technical support.
Shipping & Delivery

Usually 1 to 3 working days

Availability will be confirmed after order receipt.

Express logistics within Switzerland & Europe.

General Terms and Conditions →

Product data

HS code: 39100000

HS code: 39100000

SILISIL Silicone Oil 20 cSt
SILISIL Silicone Oil 20 cSt
SILISIL ·

SILISIL Silicone Oil 20 cSt is PDMS for capacitor impregnation, dielectric insulation and electronic applications.

SILISIL Silicone Oils are high-purity linear polydimethylsiloxane (PDMS) liquids with a purity of 100%. Their viscosity of 20 cSt defines their application range—from lubrication and release agents to hydraulic functions and specialized care and industrial applications.

Standard for dielectric applications

20 cSt is the established viscosity for capacitor impregnation and transformer oil supplementation — good spreading ability combined with high dielectric strength and low loss factor.

SILISIL Silicone Oil 20 cSt in figures
20
cSt
>250 °C
Flash point
14 kV/mm
carbon copy
-60 °C
freezing point

What distinguishes SILISIL Silicone Oil 20 cSt

Dielectric medium
Excellent dielectric strength for electronic impregnation and potting.
Low loss factor
Loss factor 10⁻⁵ — minimal dielectric losses in high-frequency applications.
Capacitor impregnation
Classic application in paper-foil capacitors with polymer windings.
Stable spreading effect
It is distributed evenly in complex geometries.
Thermal stability
Resistant up to +200 °C without loss of properties.
Water-repellent
Impregnation protects against moisture for a long time.

What is SILISIL Silicone Oil 20 cSt used for?

Capacitor impregnation
Dielectric filling in film and paper capacitors with high voltage resistance.
Transformer auxiliary oil
Special impregnation in dry transformers and high-voltage components.
Electronic potting
Thin impregnation of coils and winding bodies.
Lubrication of precision parts
Thin but stable lubricant for micromechanics and medical devices.
Hydraulic damping
Low-viscosity damping in servo motors and precision drives.
Antifoam concentrate
Highly effective defoamer for aqueous and non-aqueous systems.
Data sheets & safety data sheet
Full TDS and SDS in DE, EN, FR — view or download directly.
To the documents →

Important instructions

Storage & Handling
Store in the unopened original container in a dry, cool place (ideally below 60°C). Avoid contact with eyes. Consult the SDS before opening.
Solvent compatibility
Soluble in aromatic, aliphatic, and chlorinated solvents. Immiscible with water and alcohols.
Release agent effect before painting
Standard PDMS prevents paint adhesion to subsequent coatings. For paintable applications, choose SILISIL Silicone Oil – Paintable Grade.
Application advice
SILITECH can advise you on the optimal viscosity choice for your application — contact us for a consultation.

Which viscosity for which application?

SILISIL Silicone Oil 20 cSt in direct comparison with related viscosities in our product range.

20 cSt
Current product		 10 cSt →50 cSt →100 cSt →
Viscosity (cSt)201050100
Main applicationCapacitor impregnationElastomer/plastic lubricationPneumatics & Compressed Air LubricationInjection molding release agent
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
SILISIL Silicone Oil, Low Viscosity Silicone Fluid, PDMS, Swiss Bearing, Polydimethylsiloxane 1K, Non-Reactive , Dielectric Release Agent, Lubricant , Hydraulic Fluid, Swiss Brand, 20 cSt

Technical data for SILISIL Silicone Oil 20 cSt

All 12 product information 3 Physical properties 3 Electrical properties 1 Product approvals 3 Thermal properties 2
Product information
brand SILISIL
Networking type Non-reactive
Container 1kg, 5kg, 25kg, 200kg, 950kg
Physical properties
Paint has hardened Transparent
Viscosity (cSt) 20 cSt
Density (g/cm³) 0.949 g/cm³
Electrical properties
Electrical insulation Yes
Product approvals
Food contact No
Suitable for medical use No
Certificates RoHS, REACH
Thermal properties
Flash point (°C) 230 °C
Pour point (°C) -60 °C

For binding values, please refer to the technical data sheet (TDS) in the "Documents" tab.

Documents and datasheets

Click on a document for a preview or the download icon for a direct download.

Safety Data Sheets (SDS) 2
SILISIL Silicone Oil 20 cSt - Safety Data Sheet DE.pdf
260 KB
SILISIL Silicone Oil 20 cSt - Safety Data Sheet DE.pdf
120 KB

Frequently asked questions about SILISIL Silicone Oil 20 cSt

Practical application and design questions — answered by SILITECH.

SILISIL Silicone Oil 20 cSt: PDMS for capacitor impregnation, dielectric insulation, and electronic applications. Main applications include capacitor impregnation, transformer auxiliary oil, and electronic potting.

PDMS (polydimethylsiloxane) is a linear silicone fluid that combines high thermal stability, low surface tension, very good dielectric properties, and a wide temperature range. The viscosity (measured in centistokes, cSt) determines the application range—low viscosities are suitable for volatile applications and lubrication, high viscosities for damping and conditioning.

SILISIL silicone oils are soluble in aromatic, aliphatic, and chlorinated solvents (e.g., toluene, xylene, hexane, diesel). They are immiscible with water and alcohols. For anti-foaming applications, highly viscous PDMS are diluted in hydrocarbon solvents and applied using a metering pump.

Store in the unopened original container at room temperature (ideally below 60°C). Avoid contact with eyes. SILISIL Silicone Oils are generally non-toxic, odorless, and tasteless; however, consult the Safety Data Sheet (SDS), which is available in the "Documents" tab.

The viscosity determines the application. 20 cSt is optimal for: capacitor impregnation and similar application profiles. For other application characteristics, you will find related viscosities in the comparison table above — if you are unsure, we will be happy to advise you on your specific application.

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Product specifications

Product information
Container 1kg or 5kg or 25kg or 200kg or 950kg
brand SILISIL
Networking type Non-reactive
Physical properties
Paint has hardened Transparent
Viscosity (cSt) 20 cSt
Density (g/cm³) 0.949 g/cm³
Electrical properties
Electrical insulation Yes
Product approvals
Certificates RoHS or REACH
Food contact No
Suitable for medical use No
Thermal properties
Flash point (°C) 230 °C
Pour point (°C) -60 °C
Keywords
Keywords
SILISIL Silicone Oil, Low Viscosity Silicone Fluid, PDMS, Swiss Bearing, Polydimethylsiloxane 1K, Non-Reactive , Dielectric Release Agent, Lubricant , Hydraulic Fluid, Swiss Brand, 20 cSt

Documents and datasheets

Safety Data Sheets (SDS) and Technical Data Sheets (TDS) are available for download: